Search Results for author: Longxiu Huang

Found 14 papers, 4 papers with code

Coseparable Nonnegative Tensor Factorization With T-CUR Decomposition

no code implementations30 Jan 2024 Juefei Chen, Longxiu Huang, Yimin Wei

This approach extends the coseparable NMF to the tensor setting, creating what we term coseparable Nonnegative Tensor Factorization (NTF).

Robust Tensor CUR Decompositions: Rapid Low-Tucker-Rank Tensor Recovery with Sparse Corruption

1 code implementation6 May 2023 HanQin Cai, Zehan Chao, Longxiu Huang, Deanna Needell

We study the tensor robust principal component analysis (TRPCA) problem, a tensorial extension of matrix robust principal component analysis (RPCA), that aims to split the given tensor into an underlying low-rank component and a sparse outlier component.

Randomized Kaczmarz in Adversarial Distributed Setting

no code implementations24 Feb 2023 Longxiu Huang, Xia Li, Deanna Needell

Additionally, the efficiency of the proposed methods for solving convex problems is shown in simulations with the presence of adversaries.

Matrix Completion with Cross-Concentrated Sampling: Bridging Uniform Sampling and CUR Sampling

1 code implementation20 Aug 2022 HanQin Cai, Longxiu Huang, Pengyu Li, Deanna Needell

While uniform sampling has been widely studied in the matrix completion literature, CUR sampling approximates a low-rank matrix via row and column samples.

Matrix Completion

Distributed randomized Kaczmarz for the adversarial workers

no code implementations28 Feb 2022 Xia Li, Longxiu Huang, Deanna Needell

Developing large-scale distributed methods that are robust to the presence of adversarial or corrupted workers is an important part of making such methods practical for real-world problems.

Guided Semi-Supervised Non-negative Matrix Factorization on Legal Documents

no code implementations31 Jan 2022 Pengyu Li, Christine Tseng, Yaxuan Zheng, Joyce A. Chew, Longxiu Huang, Benjamin Jarman, Deanna Needell

Classification and topic modeling are popular techniques in machine learning that extract information from large-scale datasets.

Classification

Fast Robust Tensor Principal Component Analysis via Fiber CUR Decomposition

no code implementations23 Aug 2021 HanQin Cai, Zehan Chao, Longxiu Huang, Deanna Needell

We study the problem of tensor robust principal component analysis (TRPCA), which aims to separate an underlying low-multilinear-rank tensor and a sparse outlier tensor from their sum.

Video Background Subtraction

Mode-wise Tensor Decompositions: Multi-dimensional Generalizations of CUR Decompositions

1 code implementation19 Mar 2021 HanQin Cai, Keaton Hamm, Longxiu Huang, Deanna Needell

Low rank tensor approximation is a fundamental tool in modern machine learning and data science.

Robust CUR Decomposition: Theory and Imaging Applications

no code implementations5 Jan 2021 HanQin Cai, Keaton Hamm, Longxiu Huang, Deanna Needell

Additionally, we consider hybrid randomized and deterministic sampling methods which produce a compact CUR decomposition of a given matrix, and apply this to video sequences to produce canonical frames thereof.

COVID-19 Literature Topic-Based Search via Hierarchical NMF

no code implementations EMNLP (NLP-COVID19) 2020 Rachel Grotheer, Yihuan Huang, Pengyu Li, Elizaveta Rebrova, Deanna Needell, Longxiu Huang, Alona Kryshchenko, Xia Li, Kyung Ha, Oleksandr Kryshchenko

A dataset of COVID-19-related scientific literature is compiled, combining the articles from several online libraries and selecting those with open access and full text available.

Virology

CUR Decompositions, Approximations, and Perturbations

no code implementations22 Mar 2019 Keaton Hamm, Longxiu Huang

This article discusses a useful tool in dimensionality reduction and low-rank matrix approximation called the CUR decomposition.

Dimensionality Reduction

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